Pholiotina arrhenii (Fr.) Singer, syn.: Pholiota arrhenii (Fr.) S. Imai, Conocybe arrhenii (Fr.) Kits van Wav.Family: BolbitiaceaeEN: Ringed Conecap, DE: Rotbrunlicher GlockenschpplingSlo.: obrokani luskinekDat.: Sept. 28. 2021Lat.: 46.35686 Long.: 13.70009Code: Bot_1408/2021_DSC08739Habitat: river bank, frequently flooded terrain covered with organic river deposits; flat terrain, calcareous ground; moist and cold place, in half shade; average precipitations ~ 3.000 mm/year, average temperature 8-10 deg C, elevation 528 m (1.730 feet), alpine phytogeographical region.Substratum: moist humus soil and buried, almost completely disintegrated wood of (probably) Salix eleagnos.Place: Lower Trenta valley, between villages Soa and Trenta, left bank of river Soa, about 8 m off water stream, near the bridge to Matev, Trenta 1 farmhouse, East Julian Alps, Posoje, Slovenia EC.Comments: IF and Mycobank disagree regarding the current name of this species. IF uses Conocybe arrhenii as current name while Mycobank uses Pholiotina arrhenii as the legitimate name. The spore dimensions are a bit too wide and better fit to Pholiotina rugosa. Hence the determination may be questionable. On the other side habit (particularly the ring, which is whitish and placed mid-height) fits better to Pholiotina arrhenii. Pilei diameter from 1.7 to 2.8 cm; stem thin, firm, elastic, hollow, 3.5 to 4.5 mm in diameter at the base somewhat thicker; smell indistinctive; spore print abundant, rustyreddish-brown, oac762. Spores smooth or eventually minutely warty. Dimensions: (7.6)7.8 - 8.9(9.4) (4.5)5.2 - 5.9(6.1) m; Q = (1.4)1.43 - 1.6(1.8); N = 35; Me = 8.4 5.5 m; Qe = 1.5. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, in water, fresh material. AmScope MA500 digital camera.Ref.: (1) Tentatively id'ed by Mr. Bojan Rot, Bovec,
www. gobenabovskem.si (2) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Wrttembergs, Band 4., Ulmer, pp 333; SP 7-8.5/4-4.5(5)(3)
www.123pilze.de/DreamHC/Download/RotbraunGlocken.htm (accessed 21. 02. 2022) SP 6.2-10/3.7-5.6(4) S. Buczacki, Collins Fungi Guide, Collins (2012), p 106. SP 7-8/4-4.5(5) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol. 4., Verlag Mykologia, (1995), p 314. SP 7.3-8.5/4.1-4.5 (6) T. Lsse, J.H. Petersen, Fungi of temperate Europe, Vol. 1., Princeton University Press (2019), p 634, SP 6-9/3.5-5.